671 
Experiment No. 7. 
Pint mixed market milk. 
Bottle immersed in water 3 inches, 4 inches out. 
Partial cream line. 
Water 
temper- 
ature. 
Milk temperature. 
Time. 
Colonies 
per loop 
in agar. 
Remarks. 
Top. 
Bottom. 
°C. 
°C. 
°C. 
Minutes. 
26 
16 
17 
2, 000 
30 
19 
20 
1 
40 
20 
21 
2 
50 
22 
22.5 
31 
60 
27 
25.5 
4? 
1,000 
70 
33 
30 
6? 
80 
40 
36 
71 
88 
9 
Simmering. 
90 
49 
43.5 
9£ 
97 
57 
51 
m 
Boiling. 
60 
53 
Hi 
1,000 
63 
55 
lli 
350 
66 
57.5 
12 
60 
70 
64 
3i 
9 
75 
70 
14! 
5 
Some scum. 
78 
75 
16 
2 
Scum. 
Experiment No. 8. 
Pint mixed market milk. 
Bottle immersed in water 5 inches, 2 inches out. 
Cream line; mixed a little, not much, with pipette. 
Water 
temper- 
ature. 
Milk temperature. 
Time. 
Colonies 
per loop 
in agar. 
Remarks. 
Top. 
Bottom. 
°C. 
°C. 
°C. 
Minutes. 
25 
19 
14.5 
215 
40 
23 
22 
3 
50 
28 
28 
6i 
230 
60 
32 
35.5 
8! 
70 
40 
43 
10i 
80 
49 
52.5 
13 
83 
52 
56 
14 
86 
55 
59.5 
15 
2, 000 
91 
60 
55 
161 
2, 100 
94 
63 
68.5 
17 
(“) 
95 
65 
71 
17* 
(°) 
97 
68 
72.5 
18 
Water boiling. 
100 
69 
75 
19 
(a) 
Scum 
100 
72 
78 
19i 
410 
100 
74 
80 
20 
Do. 
Lost. 
